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Analysis and paper on chamber and telescope performance
E. Bossini, C. Cicalò, D. De Gruttola, I. Gnesi, M. Garbini, S. Grazzi, M.P. Panetta, C. Ripoli (many thanks to F. Noferini and F. Coccetti) 14/07/2017 EEE analysis meeting
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Status spatial and time resolution measured (sx ~ 1cm, sy ~ 1cm, st < 200 ps) time slewing correction applied (~ 20% improvement on st) trending of several quantities done for a few telescopes efficiency has been measured (with internal and external trigger) writing almost finalized c2 and fraction of events with good tracks fraction of events with aligned hits time of flight chamber and telescope multiplicity HV trigger rate (duty cycle) ….. 14/07/2017 EEE analysis meeting 2
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Time resolution distribution used to measure st = √3/2sDT
no selection on events w/o clusters cut on reconstructed tracks c2 < 10 strip by strip calibration applied result obtained on TORI-03 for Run 2 (same clock distributed to both TDCs) and almost all telescopes in Run 3 preliminary results presented at a few conferences distribution used to measure st = √3/2sDT DThit = (TH_bot + TH_top)/2 - TH_mid expected time on the middle chamber hit time measured on the middle chamber 14/07/2017 EEE analysis meeting 3
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BOLO-01 st < 255 ps st < 342 ps st = 209 ps st = 280 ps
14/07/2017 EEE analysis meeting 4
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BARI-01 st = 263 ps st = 309 ps 14/07/2017 EEE analysis meeting 5
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TORI-01 st = 192 ps st = 247 ps 14/07/2017 EEE analysis meeting 6
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BOLO-03 st = 178 ps st = 231 ps 14/07/2017 EEE analysis meeting 7
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Time resolution time slewing improves time res of about 20%
offsets to be understood (lenght of cable of the middle chamber to be cheked) st already in the paper (including comparison with beam tests in 2006) results from almost all telescopes available in Run 2 and Run 3 plot showing time resolution for all available telescopes will be included in the paper ALTA01 offset BOLO02 small offset BOLO04 small offset CAGL01 small offset CERN01 small offset GROS01 small offset LAQU01 small offset LECC01 small offset LECC02 small offset LODI01 small offset LODI02 small offset PATE01 small offset PISA01 offset SAVO03 small offset TERA01 small offset TORI01 offset TORI03 small offset TRAP01 small offset VIAR01 offset TORI-03 Run 2 to be done in Run 3 14/07/2017 EEE analysis meeting 8
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Spatial resolution distribution used to measure st = √3/2sDT
no selection on events w/o clusters cut on reconstructed tracks c2 < 10 strip by strip calibration applied result obtained on TORI-03 for Run 2(same clock distributed to both TDCs) and almost all telescopes in Run 3 preliminary results presented at a few conferences distribution used to measure st = √3/2sDT DX(Y) = (X(Y)bot + X(Y)top)/2 – X(Y)mid x(y) coordinate measured on the middle chamber expected x(y) coordinate on the middle chamber 14/07/2017 EEE analysis meeting 9
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Spatial resolution new analyser sY = √3/2sDY ~ 1.2 cm
sx = √3/2sDY ~ 1 cm sx and sx already in the paper (including comparison with beam tests in 2006) results from almost all telescopes available in Run 2 and Run 3 plot showing the spatial resolutions for all available telescopes will be included in the paper 14/07/2017 EEE analysis meeting 10
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Trending plots section to be written in the paper
data from Run 2 and Run 3 stability garanteed for a few telescopes in the same period some good results expecially on TOF, c2 and multiplicity some results a bit more problematic (included in the paper at the moment with a “positive view”) need to decide whether to show HV and rate trends or not section to be written in the paper 14/07/2017 EEE analysis meeting 11
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Trending plots mean value for 5 telescopes is stable over 5 months
small increase for one of them on a couple of days 14/07/2017 EEE analysis meeting 12
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Trending plots fraction of good tracks 5 telescopes is stable over 5 months small drop for one of them on a couple of days 14/07/2017 EEE analysis meeting 13
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Trending plots mean value for 5 telescopes is stable over 5 months
small drop for one of them on a few days 14/07/2017 EEE analysis meeting 14
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Trending plots multiplicity for 5 telescopes is stable over 5 months
important increase for one of them on a few days (due to some sudden noise) 14/07/2017 EEE analysis meeting 15
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Trending plots HV stability declared by the manifacturer is 1 kV at full load (10 kV) stability on less than 2 months for 3 telescopes only possibility to improve the stability by controlling T in the room or by applying online corrections do we want to show this trend? 14/07/2017 EEE analysis meeting 16
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Trending plots stability on 4 months for 9 telescopes in Run 2 (to be checked in Run 3) many drops present in these cases do we want to show this trend? 14/07/2017 EEE analysis meeting 17
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b and 1/b distributions SAVO-02 1/b b TORI-03 1/b b
results from almost all telescopes available in Run 2 and Run 3 plot showing the b and 1/b for all available telescopes will be included in the paper 14/07/2017 EEE analysis meeting 18
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b and 1/b distributions labels with the names of the telescopes will be be in these plots, rather than the numbers.. 1/b b section to be written in the paper results from almost all telescopes available in Run 2 and Run 3 plot showing the b and 1/b for all available telescopes will be included in the paper 14/07/2017 EEE analysis meeting 19
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Efficiency (internal trigger)
plateau starts around 17 kV for all telescopes HV corrected by T and p already in the paper (including comparison with beam tests in 2006) 14/07/2017 EEE analysis meeting 20
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Efficiency (external trigger)
measurement performed on TORI-03 with 2x2x25 cm3 scintillators as trigger system HV scan S/B estimation muon rate corrected by eff (m = Re) section to be written in the paper 14/07/2017 EEE analysis meeting 21
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Efficiency (external trigger)
section to be written in the paper 14/07/2017 EEE analysis meeting 22
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Efficiency (external trigger)
section to be written in the paper 14/07/2017 EEE analysis meeting 23
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Efficiency (external trigger)
section to be written in the paper 14/07/2017 EEE analysis meeting 24
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Paper abstract and introduction written
some references to the needs for the analysis performed by the EEE Collaboration are present 14/07/2017 EEE analysis meeting 25
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Paper detector description and experiment setup written 14/07/2017
EEE analysis meeting 26
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Paper detector description and experiment setup written
picture to be replaced 14/07/2017 EEE analysis meeting 27
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Paper detector description and experiment setup written
picture to be replaced? New one to be done in this case 14/07/2017 EEE analysis meeting 28
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Paper section on track reconstruction to be modified (copied
by other papers at the moment) section on performance written; to be slightly modified 14/07/2017 EEE analysis meeting 29
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Paper section on HV stability written
to be moved close to the section on the efficiency 14/07/2017 EEE analysis meeting 30
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Paper section on time resolution written
strategy for track selection to be added 14/07/2017 EEE analysis meeting 31
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Paper section on time resolution written
time slewing correction explained and results shown 14/07/2017 EEE analysis meeting 32
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Paper section on time resolution written
plot t vs TOT to show the strategy for the time slewing correction plot with st for all telescoped to be added section on spatial resolution written; to be slightly modified 14/07/2017 EEE analysis meeting 33
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Paper plots of st for the same telescope at the moment just as example (3 other telescopes will replace them) plot with sx and sy for all telescoped to be added section on spatial resolution written; to be slightly modified 14/07/2017 EEE analysis meeting 34
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Paper plots of st for the same telescope at the moment just as example (3 other telescopes will replace them) plot with sx and sy for all telescoped to be added section on spatial resolution written; to be slightly modified 14/07/2017 EEE analysis meeting 35
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Paper plot with sx to be added
plot showing the improvement using the new version of the analyzer to be added? section on efficiency with internal trigger written 14/07/2017 EEE analysis meeting 36
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Paper section on efficiency with internal trigger written
comparison with beam tests in 2016 mentioned section on efficiency with external trigger to be written 14/07/2017 EEE analysis meeting 37
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Paper conclusions to be written bibliography to be completed
14/07/2017 EEE analysis meeting 38
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Conclusions data from Run 2 and Run 3 provide good data for the paper
a few plots to be included (soon available) number of analyzed tracks (likely ~1 billion) to be included finish writing in the next 2 weeks 14/07/2017 EEE analysis meeting 39
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